I recently watched both and really liked it.

A friend have been recommending me to watch Solo Leveling for a while now, and despite my fears of it just being another generic ass story and protagonist, I actually enjoyed it.

The only 2 complaints I can think of right now are that the other characters aren't really that interesting outside the protagonist, so I kinda don't care about them very much, and I think not having any commentary on the very predatory capitalism showed in the story is a bit of a let down, like, the protagonist barely makes money, there's literal monopolization of portals and creation of guilds for profit seeking, yet there's 0 commentary on that, unless I missed something.

That being said, I like the protagonist, he's not an extremely evil or perfectly good guy, he's just a dude that got dragged along and have to make some though decisions here and there.

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For Trigun, I watched the old anime a while ago, and I thought this new one would go a completely different route, but I was gladly surprised with how it turned out. I just finished watching it and I really liked it. I never read the manga so I don't know how close it is to the original story, but I was shocked with how different it was from the old adaptation. I remember a lot of people complaining about Vash's new design, but honestly the only issue I have with it is that it's a bit too simple lol, I wish his clothing was more complex/overdesigned.